Answer:
the total trajectory length is 349.39 km
Explanation:
for the first trajectory
Time taken in first trajectory = First trajectory length /velocity = 180 km/95 km/h = 1.894 hours
therefore since the total time is 4.5 hours
Time taken in second trajectory = Second trajectory length /velocity
4.5 hours- 1.894 hours = Second trajectory length / 65 km/h
Second trajectory length = 169.39 km
therefore the total trajectory length is 180 km + 169.39 km = 349.39 km
